Pump



Ti'l'aten'ted Aue. 3, 1925.

UNITED stares 1,594,389 Parser erstes.,

J'osnria n. Mci-inn,- cr crrr'cAGc, trainers.

Application filed septemberza, 192e, sei-iai No. 412,297. Renewed nece-miner 22', 1925.

The invention relates te rotary pumps and its general object is the provision of a construction for a pump of this type which is of a practical character and which is lefficient in operation.

More specifically stated, an'important ob- `iect of the invention is to provide a rotary pump in which a substantially continuous flow of liquid is capable. of being maintained.

A further object of the invention is to provide a pump having-` a smooth and easy operation and one in which the noise of operation is reduced to a minimum.

A still further object of the invention is to provide a construction in which the return flow or leakage of liquid though the pump when idle is prevented.

The objects above set forth together with other advantages, are attained by the construction and arrangement shown in. the accompanyinoy drawings forming part hereof in which Figure 1 is a central longitudinal `section through the pump casing, the operating means for the pump being?,` shown in elevation. Fig. 2 is a transverse sectional view through the pump taken substantially in the plane of line 2 2 oflFig. 1. Fig. 3 is a View similar to Fig. 2 but showing the operating means in a different position. Fig'. 4i is a fragmentary sectional view taken in the plane of line 1 1-41 of Fig. 3.

The pump comprises, in general, a casing` 7 havingan inlet 8 and an outlet 9. ln one end of the casing there is provided a main pump chamber or cylinder 10 in which a rotor 11 is mounted for operation, and in the opposite end of the casing there is providhd an. auxiliary chamber 12 having an oscillatory member 13 therein. Rigid with the rotor 11 is a Web or blade 141 which depends into the oscillatory member 13 and cooperates therewith to control the flow of liquid into and from the main andv auxiliary chambers. The rotor 11 is operatively associated with a shaft 15 for movement thereby in a clockwise direction (FigsQ and 3). lin this operation, the periphery of the rotor contacts,' with a rolling motion, the inner periphery of the main chamber or cylinder 10. and the oscillatory member 13` swings from sidel to side in the chamber 12 the arrangement being: such'that the rotor 11 and member 13 operate alternately to expel liquid froin their respective chambers to the outlet 9y and?. thus maintain a substantially uniformffflw of liquidf'from the"pump.`

The, casing may be of any suitable construction. Herein it comprises a main portion 16 which is carried by a standard 17 mounted on a base 18. Rigid with the standard is a face plate 19 to which is secured by means of bolts 20, the main portion 16. On opposite sides of the casing, substantially intermediate the ends thereof, are provided the inlets 8 and 9 with which are connected an inlet pipe 21 and an outlet pipe 22 respectively. The chamber 10 is formed in the upper portion of theA casing bythe main portion 16 and the face plate 19, while the chamber 12 is similarly formed at the opposite end of the casing.

The rotor 11 is annular in form and of a diameter substantially greater than that of the shaft 15. The' latter passes throughl said rotor and has bearings in the standard 17 and in the easing, a suitable stuffing box 15"L being' provided around the shaft in the standard. A pin 23 extends transversely in the shaft 15 Within the rotor 11, and has a portion projecting from one side of the shafti andv carrying at its free end a semi-cylindrical block or segment 24:. Said pin is freely slidable in its aperture in' the shaft and a bow-spring` 25, acting between the pin and the shaft, forces the pin outwardly and thus holds the segment in engagement with the inner periphery of the rotor 11. Herein the spring 25 is entered through a hole 25a in the pini, and its free ends bear in notches 25b in the shaft. By this construction, if any foreign substance should pass through the pump and enter between the' rotor 11 and the inner peripheral wall of the cylinder 10., th'e'spring- 25 will yield to permit of the passage of such foreign substance without injury tc the operating;l mechanism. Moreover, in the event that the passalqe of the liquid throughthe outlet 9 should be cut off while the pump continues to operate, as by theaccidental turningFV of a valve, the rotor 11 is capable of yielding to permit of the escapeof theV liquid in a reverse direction between the rotor andv the` cylinder'.

rllhe chamber 12 in the opposite end ofthe casing 7 is substantially triangular in form so asv t'o'permit of the oscillatory movement of the" member 13. `This latter memberl is preferably constructedfrom a single piece of metal bent upon itself' into substantially tl-formto receive the blade 14 which is rigid with the rotor 11 and projects from the peripherly thereoft Alt the upper end ofthe les member 13 the opposite sides are rounded to provide a bearing member 2G, and between the chambers 10 and 12 and the inlet and outlet passages 8 and 9, the casing is shaped to provide a` central elongated chamber 27 in which said bearing;l member 26 is seated. By reason of the peculi ar construction of the member 13, the upper ends thereof constituting; the bearing member 26 are normally forced outwardly with a spring action into engagement with its seat. The upper surface of the portion 26 of the oscillating member is shaped as at 26n so that when the rotor is in its lowermost position (Fig. such surface will form with the inner periphery of the cylinder 10 a continuous bearing surface with which the outer periphery of the rotor is adapted to engage. This construction is important in that it eliminates a dife ficulty commonly experienced in pumps of this general character, to wit, the knocking,r or pounding of the rotor upon the edges of the opening into the cylindrical chamber, which leads from the inlet and to the outlet.

The blade 14 is adapted to lit snugly between the opposite side walls of the member 13, and the lower end portion 14a constitutes a slide valve for controlling the flow of liquid into and from the chamber, and from one side of the chamber to the other. The blade 141 may be secured to the rotor 11 in any suitable way( Herein it is entered through an elongated slot in the rotor and fastened thereto as by neans of keys 28 (Figs. 3 and 4).

ln passing from the inlet S to the chambers 10 and 12, and from said chambers to the outlet 9, the liquid passes through the oscillating member 13. To this end said member 13 is provided in its upper portion 26, at opposite sides thereof, with a series of inlet ports 29 and outlet ports 30; its upper end with inlet and outlet ports 31 and 32 respectively; and its lower portion substantially centrally thereof with ports 33 and 34: located respectively at opposite sides of the member 13. As .shown in F 1, I have provided a plurality of each of said ports located in rows extending transversely of the oscillating` member so as to provide for relatively great capacity without weakening the structure. To permit of the How of liquid from the ports 29 to the ports 33 and from the ports to the ports 30, the blade 14 is recessed or grooved at its opposite sides as shown at and 3G; At its lower end, the oscillating member bears upon a transverse member 37 having a concave surface correspending in shape to the lower end of the oscillating member so as to prevent the passage of liquid around the bottom of the oscillating member. Said member 37 is yieldingly held in. engagement with the lower end of the oscillating member, as by means of a bow-spring 3 8, so as to be permitted to yield to allow the passage of foreign particles between it and the member 13, without injury to the pump.

ln the operation of the pump, the shaft 15 is driven in a clockwise direction (Figs. 2 and ln Figs. 1 and 2 the rotor 11 is shown in the position which it occupies near the end of a cycle in which the liquid first drawn into the inlet side of the chamber 10 through the ports 29 and 31, in the upper end of the oscillating member, is then forced to the opposite side of the chamber in the succeeding rotation of the rotor, and finally is expelled through the ports 32 and 30. Thus, in Fig. 3, the rotor has drawn aquantity of liquid into the chamber 10, at the side adjacent the inlet 3, through the ports 29 and 31, and it will thus be a )parent that in the continued movement of tie rotor, the liquid which has thus previously been drawn into the chamber 10, will be forced upwardly around the rotor to the right hand side of the chamber, from whence it is expelled to the outlet 9 as the rotor completes its cycle of movement.

ln such operation of the rotor 11, the blade 1l operating in the member 13 oscillates the latter in a general direction opposite to that of the rotor itself. Thus, as the rotor is commencing its upward stroke in the left hand side of the cylinder, the oscillating member is positioned at the richt hand side of the chamber 12, and in the continued movement of the rotor 11 the oscillating member 13 swings to the opposite sine of the chamber 12. In this movement, the valve member 14 for the oscillating member moves with reference to the ports 33 and 34C so tlat the liquid is drawn first into the left hand side of the chamber 12 through the ports 29 and 33 and the groove 35, and then the rotor continues its movementinto the upper portion of the cylinder and thence downwardly the liquid is forced from the left hand side of the chamber 12 to the opposite side through the ports 33 and 34, such passage of the liquid being permitted by reason of the fact that the valve member 111 is positioned above said ports. Finally, as the rotor descends to the position shown in Fig. 3, the valve 14a is moved downwardly below the port 34 so that communication between. the chamber and the outlet is established through the ports 34, groove 36 and ports 30; and as the rotor 11 moves upwardly to the left (Fig. 3), the oscillating member is swung to the right. The liquid in the right hand portion of the chamber 12 is thus being expelled to the outlet, while the rotor is operating to force the liquid from the left hand side of the cylinder 10 to the other and to draw into the left side of the chamber a new supply. ln the movement of the oscillating member toward the right to expel the liquid from the right hand p0rtion of the chamber 12, a quantity of liquid is drawn into the lett hand portion of said chamber 12 for another cycle oit operation.

The maximum displacement ot liquid eliiected by the li'otor 11 'trom the chamber 10 occurs during the movement ot the rotor from a position et one side of the cylinde' l` upwardly and dovnivardly to the epposite si de thereof or to the position shown in F During this movement ot the rotor7 the oscillating; member 13 moves to the le'l't in the chamber 12, forcing` the liquid previ ously drawn into that portion ot the chember to the right hand side thereof. lt will be apparent, therefore, that during` the next portion ot the movement ot the rotor 11 from the position shown in 2 to the opposite side oit the cylinder duringy which the minimum displacement ot liquid takes piece. the oscilla-ting member moves to the right (Fig. 2) forcing4 the liquid therein to the outlet andthus compensating` for the relatively smaller volume discharged trom the cylinder lO'during' this portion oit its stroke. Consequently e substantially continuous und non-pulsating' flow of the fluid from the pump is effected'.

It will, of course, be understood. that the rotor ll., oscillating member 13 and blade 1.4i extend'V entirely across the interior et the casing 7 so that any passage ot liquid throughL the pump must occur through the ports and around the rotor' in the menner especially provided. The` zgrooves und it will be noted, terminate at their lower ends just above the valve member 14a so that when the rotor is in its uppermost position, in which the passage ot liquid through the ports 3-3 und 34 is permitted, the passage ott liquid from the inlet 8 to the outlet 9 around the blade let is prevented. Thus in no position ot the operating; mechanism, when the latter is idle` a return .tloW of the liquid trom the outletqto the inlet possible.

By reason of' the employment ot' the suxiliary chamber' 12 andy the oscillating memher 13 in` conjunction with the rotor 11, it will be apparent that the i'loiv ot lieu-.id through the pump is maintainedl substantially continuous. then the rotor is acting' to 'force liquid 'from the cylinder to the outlet the oscillating member 13 acting; to force liquid from the lett hand side oit the chamber 12 to the other, and While the rotor is operating to torce the liquid in the lett hend side of the cylinder to the outlet side thereot, the member 13 is operating to expel the liquid from the` right hand side ot, the chamber 12 to the outlet,

The bearing member 26 at the upper end of the oscillating membeiuit will he noted, constitutese tulcr-um upon which the inemherfli issnjunef7 thus eliminating any loose n Abettiveen-the, 1 4; andthe eesiugor between the oscillatingmemloer and tliecas the upper insures thet the hell member QG shell et all times have a. hearing upon its seat.

tor

The pump Wh' ,h l have provided :is thus of e very practical chara i". und while l have hereii. described it with considerable p .ticularity it is to he understood various changes in details ot co and nrrangcment may he mad Without deprinting from the spirit end scope oit the invention as expressed in the eppended claims.

lf desire to point out, in particuler7 that in the operating;` means ttor the rotor 11, a springv tor maintaining the segmentel op eratingg' member 2li in contact with the rotor is not in ell essentiel, .since centrifugal torce? especially in large pumps may he depended upon to accomplish this purpose.

l claim as my invention:

l. A rotarv pump comprising'. in combi'- nntion, a c2 ine; having; an inlet and en outlet, a c 'nder having rotor eccentricully mo' ed therein, end' an auxiliary cl mhcr having' an oscillating' member therein operatively sssocieted With the rotor so to be drivei'i thereby, said rotor and member beingV adapted to alternately expel liquid drawn from the inlet to the out-l A. pump comprising, in combine ion, ,e' having); an inlet and en outlet. a

e casin cylindiicul chsrnher. :in auxiliary chamber, a rotor eccentrically mounted in the cylindrical chamber adapted to he driven so that its pcriphersl well contacts the inner peripheral Wall ot the cylinder chamber` and an oscillatory menffeer in seid auxiliary chamber operatively associated' with the rotor so es to he actuated thereby inthe movements oi the rotor. seid memher having e plurality ot ports therein and valve member operable to permit ot the passage et liquid from the inlet to and 'from chambers,

3. A rotary pump' comprising7 in combination7 :i ces e having' en inlet and an outV let. e cylindiL :el cheu'iber, a rotor eccentricelly mounted in said chamber.y and valve means for `ontrolling the i'loiv oit liquid trom the .inlet through seid chamber to the outlet, said ineens comprising memher located het veen the inlet and the outlet and hnvinp; ports establishing' commu nation between the inlet end one side ot the chamber and lmtiveen` the other side oil" the chemher andA the out-let, and e meuiher id with the rotor and: lievi slidiiw. er `@gement with' said. ported member vr.. Arebyy topre# end oit the oscillating memberI lill) vent the tionof liquid directly therethrough.

el. A rotary pump comprising, in combination, a casing); having an inlet and an outlet, a cylindrical chamber and an au4 iliary chamber, a rotor mounted in the cylindrical chamber eccentrically thereof, a member adapted to oscillate in said auxiliary cham- -ber and having; a portion seated between said inlet and said outlet so as to constitute a iulcrum there'lor, said member having' a plurality oit ports therein establishing communication between the inlet and one side ot each ol said chambers and between the other side of each of said chambers With said outlet` and a part ri ,fgid With said rotor operatively associated With said oscillatory member whereby to control the iloiv oi? liduid by Way ot said ports from the inlet through said chambers to the outlet.

5. A pump comprising, in combination, a casing' having' an inlet and an outlet, a cylindrical chamber, an auxiliary chamber, a rotor eccentrically mounted Within said cylindrical chamber so as to be capable of yielding' radially inwardly from the peripheral Wall ot said cylindrical chamber. and an oscillatory member in. said auxiliary chamber operable by said rotor, said rotor and oscillatory member beine' adapted to operate alternately to expel liquid from their respective chambers.

6. A pump comprising, in combination, a casing having' a main chamber and an auxiliary chamber, a rotor in the main chamber and a reciprocatory member in the auxiliary chamber operable in the movements ot the rotor to discharge trom its chamber, during' the minimum displacement stroke oit the rotor, liquid drawn into said auxiliary chamber during' the maximum displacement stroke oi' the rotor.

.7. A pump comprising', in combination, a cylinder hzwiue` a rotor therein adapted to discharge from the cylinder during' one portion of its stroke a relatively lrenter volume ot 'liuid than luring the remaining portion of its stroke, and means associated with said cylinder and rotor adapted during' the minimum displacement stroke ot the rotor to et- Jfeet the discharge et a compensatine volume of fluid whereby to produce a substantially constant and non-pulsating' flou' ot' iiuid from the pump.

8. A rotary pump comprising', in combination, a casino; having' an inlet and an outlet, a cylindrical chamber` an auxiliary chamber, a central chamber located bet-Ween said inlet and outlet and between said cylindrical and auxiliary chambers, a rotor mounted eccentrically Within the cylindrical chamber, an oscillatory member mounted in said auxiliary chamber, a blade depending into said oscillatory member, said oscillatory member having a portion seated in said central chamber, and having ports controlled by said blade to permit of the passage of fluid from said inlet to said chambers and from the chambers to the outlet.

9. A rotary pump comprising, in combination, a casing?,` having; an inlet and an outlet, a main chamber, an auxiliary chamber, a central chamber located between said inlet and outlet and betiveen said main and auxiliary chambers, a rotor mounted eccentrically within the main chamber, an oscillatory member mounted in said auxiliary chamber, a blade depending into said oscillatory member and seated in said central chamber said oscillatory member having' ports controlled by said blade to permit ot the passage ot iluid i'rom said inlet to said chambers and from the chambers to the outlet, said oscillatory member having' its end adjacent the main chamber shaped to provide ivith the inner peripheral Wall oi' said chamber a continuous bearing' surface 'for supporting' the rotor.

lO. A pump comprising, in combination, a casing having an inlet and an outlet, a main or cylindrical chamber and an auxiliary chamber, a rotor eccentrically mounted Within the main chamber, an oscillatory member operable in said auxiliary chamber, a hollenT member seated between said inlet and said outlet and between said tivo chambers, and means for controlling' the tloiv ot liquid trom the inlet to the chambers and from the chambers to the outlet, said bolloiv member having its surface adjoining' the cylindrical chamber shaped to provide a support :tor the rotor in its movement .trom one side oi the main chamber to the other.

ll. A rotary pump comprising, in combination, a casing' having; an inlet and an. outlet, a main chamber having' a peripheral Wall and a rotor eccentrically mounted therein, a central chamber between said inlet and outlet, and means for controlling' the flow ot liquid from the inlet to said chamber and from the chamber to the outlet includingT a member seated in said central chamber and providing` a support tor the rotor in the passage of the latter from one side ot its chamber to the other.

12. A pump comprising, in combination, casing' having' an inlet and an outlet. a main chamber having' a rotor eccentrically mounted therein, an auxiliary chamber having' an oscillatory member therein operatively associated With said rotor, means for controlling the iioiv ot liquid from the inlet` through said chambers to the outlet, and spring pressed means providing' a yielding,r bearing for the tree end 0In said oscillator'7 member.

13. A pump comprising, in combination, a casing' having an inlet and an outlet, a chamber, a second chamber located between the inlet and the outlet and said first chamllO ber, an oscillatory member operable in said first chamber and having a portion seated in said second chamber, said oscillatory member having' valve-controlled ports therein adapted in the moreniients oi? the oscillatory1 member to permit ot the flow oit liquid from 'the inlet iirst to one side ot said chamber,

thence to the opposite side of the chamber, and iina-lly to the outlet.

14. A. pump comprising, in combination, a casing' having an inlet and an outlet, a chamber, a second chamber' located between the inlet and the outlet and said first chamber, an oscillatory member operable in said iirst chamber and havinga portion seated in said second chamber, said oscillatory member having valve-controlled ports therein adapted in the movements of the oscillatory member to permit of the flow of liquid from the inlet iirst to one side of said chamber, thence to the opposite side o't the chamber and linally to the outlet, and means providintr a yielding' bea-ring for the tree end oi said oscillatory member;

l5. A pump comprising, in combination, a casingl having an inlet and an outlet, a chamber, a second chamber located between the inlet and the outlet and said first chamber, an oscillatory member operable in said iirst chamber and having; a portion seated in said second chamber, said oscillatory member having valve-controlled ports therein adapted in the movements ot the member to permit ot the flow of liquid from the inlet lirst to one side of said chamber, thence to the opposite side ot the chamber. and finally to the outlet, and a yielding member mounted in said first chamber and having; its inner surface shaped to conform to the tree end of the oscillatory member.

1G. A pump comprising, in combination, a casina` having an inlet and an outlet, a cylindrical chamber, an auxiliary chamber and a central chamber located between said inlet and outlet and the two iirst mentioned chambers, a rotor mounted eccentrically within said cylindrical chamber, an oscillatory member mounted in said auxiliary chamber and having` a hollow portion seated in said central chamber, said rotor having a blade rigid therewith depending into said oscillating member through its hollow porn tion, said oscillating member having` a plurality of ports therein through which liquid is permitted to i'low from said inlet to said main and auuiliary chambers and from said two chambers to the outlet, the ports in the oscillatory member being adapted to be controlled by said blade whereby to permit the passage of fluid from one side of the auX- iliary chamber to the other in the swinging movement or" the oscillatory member.

17. A pump comprising, in combination, a casing having an inlet and an outlet, a cylindrical chamber, an auxiliary chamber and a central chamber located between said inlet and outlet and the two iiist mentioned chambers, a rotor mounted eccentrically within said cylinder chamber, an oscillatory meihber mounted in said auxiliary chamber and having` a hollow portion seated in said central chamber, said rotor having a blade rigid therewith depending into said oscillating member through its hollow portion, said oscillatingmember and its hollow portion having` a plurality of ports therein through which liquid is permitted to How from said inlet to said main and auxiliary chambers and from said two chambers to the outlet, the ports in the oscillating member being' adapted to be controlled by said blade whereby to permit the passage of fluid Yfrom one side oit the auxiliary chamber to the other in the swinging movements of the oscillatory member, and said blade having,` recesses in its opposite sides adapted to establish communication between said central cham-ber and the ports oi' the oscillating" member Lo permit of the ilow of liquid to and trom the auriliary chamber. i8, llt rotary pump comprising, in com bination, a casing` having an inlet and an outlet, a chamber having an oscillatory member mounted therein and a second chamber, said oscillating,l member having a portion seated in said second chamber, a blade depending` into said oscillatory member tirough said portion thereof, and means for swinging,` said blade, the hollow and depending portions ot said oscillatory member each having a plurality of ports in its opposite sides, the ports in the de pending` portion being adapted to be directly controlled by said blade whereby to permit of the passage of liquid from one side oi said iirst chamber to the other.

19. A rotary pump comprising, in combination, a. casing havingl an inlet and an outlet, a main chamber, an oscillatory memier providing a piston mounted in said main chamber, a second chamber, said oscillatory member having a hollow portion seated in said second chamber, a blade oroject-ing` into said piston through the hollow portion ot the oscillatory member, and nnans ior swinging' said blade, said hollow portion and said piston each having,` a plurality ot ports in its opposite sides, the ports in the piston being,r adapted to be directly controlled by said blade whereby to permit ot the passage oi liquid from one side of said iirst chamber to the other', and said blade having,- recesses in its opposite sides adapted to establish communication between the ports in said hollow portion and the ports in the piston to permit ot the flow ot pressure iiuid into and from said iirst chamber.

20. A rotary pump comprising, in combination, a casing having an inlet and an Sil outlet, a chamber having an oscillatory member mounted therein, means tor swinging said member including a blade depending into the member, said member having a plurality of ports therein through which fluid is adapted to iow from the inlet into the chamber and from the chamber to the outlet, and said blade being adapted to control certain of said ports.

2l. A rotary pump comprising, in combination, a casing` having; an inlet and an outlet, a substantially triangularly spaced chamber, a member located between the inlet and outlet and having a piston portion depending' into said chamber, means for swinging said member, and valve controlled means for eti'ecting the flow of liquid from the inlet to said chamber and from the chamber to said outlet in the operation o said member.

22. A pump compfising, in combination, a casing` having;` an inlet and an outlet, a substantially triangularly shaped chamber, a hollow member located between .said inlet and outlet and having a piston portion depending into said chamber, said member having'ports in its opposite sides located in the upper portion thereof and also in the lower portion thereof, a blade dependingl into said member and having` a portion adapted to control the lower ports of said member, said blade havingg` recesses in its opposite sides adapted to establish communication between the upper and lower ports of said member on the opposite sides thereo, and means for swinging said blade and thereby oscillating said member. 23. A pump comprising, in combination, a Casing having an inlet and an outlet, two chambers disposed 0n opposite sides of said inlet and outlet, a piston in each of said chambers one of which has a rotary motion and the other an oscillatory motion, said pistons being` operatively associated so that one oi said members is driven by the other, and means for controlling the flow oit' liquid through the pump, said pistons being operable to expel. liquid from the pump alternately from their respective chambers.

In testimony whereof, I have hereunto set my hand.

JOSEPH R. HIGHER. 

